Plane.



W. B. SPARKS.

PLANE. APPLICATION FILED JULY 11, 1913.

Patented July 21, 1914,

w m m m ATTORNEY.

UNIT @IATS PATENT OFFICE.

WILLIAM E. SPARKS, OF NEW HAVEN, CONNECTICUT, ASSIGNOR T0 SARGENT 86COMPANY, OF NEW HAVEN, CONNECTICUT, A CORPORATION OF CONNECTICUT.

PLANE.

incense.

Specification of Letters Patent.

Patented July 21, 1914.

To all whom. it may concern Be it known that I, WILLIAM E. SrAnKs, acitizen of the United States, residing in the city and county of NewHaven and State of Connecticut, have invented certaln new and usefulImprovements in Planes, of which the following is a full, clear, andexact description.

This invention relates to planes, and more particularly to reversiblerabbet planes.

The plane selected for illustration is ofthe type known as a show-caseplane, it being adapted to cut the rabbets of show-cases by movement ineither direction.

The primary object of the invention is to provide a simple, efficientform of reversible rabbet plane in which reversal may be effectedwithout adjustment of the cutting mechanism. To this end, the plane isprovided with two cutters having a novel relation to each other and tothe body or stock and clamped on the stock in a novel manner.

The invention also aims to improve certain general and detail featuresof construction in planes of the class to which my invention relates. I

To these and other ends, the invention consists in the novel featuresand combinations of parts to be hereinafter described and claimed.

In the accompanying drawing, Figure 1 is a side elevation of a planeembodying my improvements, F ig. 2 is a top plan view of the same, Fig.3 is a front end view, Fig. 4 is a section on line 4c4: of Fig. 2, Fig.4 is a section on line 45 B of Fig. 2, Fig. 5 is a fragmentary plan viewof the stock or body with the cutters and clamp omitted, Fig. 6 is abottom plan view of Fig. 5, and Fig. 7 shows the clamp in plan and inrear elevation.

Referring to the drawing, the stock or body 10 is formed of a flat metalplate having a knob or handle 11 projecting upward from the rear end. Inadvance of the knob 11 the body is provided with a raised portion orenlargement 12 having intersecting grooves 13, let. The groove 13 isdeeper than the groove 14 and said grooves lead completely to theforward edge of the stock at the corners thereof, as shown at 13 and 1 1respectively in Fig. 5. Secured to the forward edge of the stock or bodyat the median portion thereof is a transverse nose piece 15 having anextension 16 opposing the'open end 13 of the groove 13 and forming inconnection therewith a throat 17 into which projects the forward cuttingend of a cutter 18 located in the groove 13. At the opposite end of thenose piece 15 the same is provided with an extension 19 forming inconnection with the forward extremity 14 of the groove 14:, a throat 20directed transversely of the plane in line with the throat 17 but at theopposite side of the plane, which throat 20 receives the cutting edge ofa cutter 21. This cutter 21 is located in the groove 1 1 and its rearportion passes over and across the rear portion of the cutter 18. Bothcutters 18 and 21 fit snugly in the corresponding'grooves 13 and 14, andwhile the axes of the cutters are directed at an angle to a lineextending transversely of the plane, the forward cutting edges of saidcutters are substantially parallel to such a line as shown in Fig. 2.

Both cutters are clamped in position in the stockby the same clampingmeans. In the form shown, I employ a clamp 21 secured to the stock orbed plate 10 by a clamping screw 22. By preference, the screw 22 engages a threaded socket 23 tapped in the stock-or bed plate at a pointslightly in front of the intersection of the grooves 13, 1 1. The clamp21 is formed of a metal plate extending transversely of the plane andhaving downturned extremities 2t. One of these extremities 24: isadapted to rest upon the ;cutter 18 at a point slightly in the rear ofthe cutting edge, and the other downturned extremity 24: of the clamp isadapted to engage the cutter 21 in a similar location so that as theclamp screw 22 is screwed lnto its socket 23, the clamp will be forciblybrought down on both cutters so as to hold v them securely in position.

In using the plane, the cutter 18 will be employed for cutting when theplane is moved in one direction, and when it is desired to reverse theplane and move it in the l opposite direction, it is simply necessary toturn it around and use the cutter 21. Hence no adjustment of the cuttersis necessary in reversing the plane.

In planing in corners or similar locations,

edge of the bed plate. This singlescrew will hold the nose piecesecurely on the end of the bed plate in connection with a tongue andgroove joint 26 formed at the meeting surfaces of the nose piece and bedplate, as shown in Figs. 1 and 4.

Without limiting myself to the construction shown, I claim:

1. In a plane, a bed plate or stock having transversely arranged throatsat the opposite forward corners thereof, there being grooves in said bedplate extending rearwardly from said throats and intersecting eachother, cutters adapted to fit said grooves, clamping means for saidcutters located in front of the intersection of said grooves; and a knobfixed on said bed plate at the rear of such intersection; substantiallyas described.

1 2. In a plane, a bed plate having intersecting grooves, one of saidgrooves being deeper than the other at the point where said groovesintersect, cutters located in said grooves and overlapping each other,and a single means for clamping both cutters in said grooves;substantially as described.

3. In a plane, a bed plate having cutterreceiving grooves extending toone edge thereof, and a detachable nose piece applied to said edge ofthe bed plate and forming in connection with the ends of said grooves,throats for the cutting ends of the cutters;

substantially as described.

4. In a plane, the combination of a bed plate or stock havingtransversely arranged throats at the opposite forward corners thereof,there being grooves in said bed plate extending rearwardly from saidthroats,

cutters fitting said grooves, a single clamp to secure both of saidcutters in the respec tive grooves at the same time, and a knob fixed tothe bed plate at the rear of the cutters; substantially as described.

5. In a plane, the combination of a bed Copies of this patent may beobtained for five cents each, by addressing the Commissioner of Patents;

plate or stock, having intersecting cutter-receiving grooves terminatingat the forward corners thereof, one of said grooves being deeper thanthe other at the point of intersection, cutters fitting the respectivegrooves, a single clamp for securing the cutters in the respectivegrooves, in overlapping relation, and asingle detachable nose piececooperating with the forward ends of both grooves to form throats forthe cutters; substantially as described.

6. In a plane, a bed plate having cutterreceiving grooves on the uppersurface thereof extending to one edge of the bed plate, a nose piecedetachably secured to said edge of the bed plate between said grooves,and extensions on said nose piece located in front of the groove ends;substantially as described.

7. In a plane, the combination of a substantially flat bed plate,cutters projecting beyond the front edge of said bed plate at differentpoints, means to secure said cutters on said bed plate, and a nose piecedetachably secured to the front edge of the bed plate between saidcutters and forming, in

conjunction with the bed plate, throats for both cutters; substantiallyas described.

8. In a plane, the combination of a stock, crossed overlapping cuttershaving their cutting edges arranged at the respective forward corners ofthe stock, a single clamp for clamping both cutters on the stock at thesame time, and a knob fixed to the rear portion of the stock;substantially as described.

In witness whereof, I have hereunto set my hand on the 9th day of July1913. v WILLIAM E. SPAR-KS.

Witnesses:

J OHN H. SHAW, BERTHA RAY.

Washington, D. C."

